Portfolio lock



KA.FRANZEN PORTFOLIO LOCK July 31, 1934.

Filed May 9, 1932 UNETED STATS PATENT OFFICE PORTFOLIO LOCK Karl August Franzen, Wald, Germany Application May 9, 1932, Serial No. 610,197 In Germany May 23, 1931 2 Claims. (Cl. 70-2) The object of the present invention is to proflap can thus be released and opened with one vide portfolios and the like with simple closing hand. means allowing the closing flap to be released The press button (1 may either be integral with and opened with one hand, and the invention conthe plate 6 or provided with an extension and sists broadly in connecting the lock to the closing connected by means of the latter to a flange p on 60 flap instead of to the body of the portfolio and the plate. adapting it to serve as a hand grip for the ma The flap can be locked by means of a key for nipulation of the flap, the lock being for this which purpose a resilient locking member in purpose arranged in a projecting position and the form of a U-shaped blade spring m is arfitted with a spring controlled latch element ranged to slide in an extension of the aperture 1 65 which can be operated by means of a press and adapted to be interposed between the stud 71. button. and the edge of the aperture Z so as to prevent Fig. 1 of the accompanying drawing represents the plate from being rocked by means of the a front view of a lock arrangement according to press button. The locking member m is moved the invention, into and out of locking position by the bit of a key 70 Fig 2 is a section on the line IIII of Fig. 1, which turns about a pin n. Fig. 3 is a section on the line III-411' of Fig. 1, One member of the spring m is bent to form a and breast m for engagement with the key bit when Fig. 4 is a view of the interior of the lock. the latter moves downwards, and an inclined tail In said drawing It represents one of the side end m" for engagement with the bit when mov- 75 walls of a portfolio or the like, and a is the closing upwards. ing flap. A lock casing b is provided which in I claim: the illustrated arrangement projects beyond the 1. In a lock for a portfolio having a closing edge of the flap and which is secured to the flanalock housing forming arigid unitary struclatter through the medium of a winged extenture secured in a projecting position to said flap sion 0. The casing b is connected to a backing and maintained in rigid relationship with the plate 1" and has an aperture for the reception of latter, a stud secured to the portfolio in posia stud it connected, by means of a plate 1', to the tion to enter an aperture in said lock housing, a side wall is, and a latch plate 6 in the casing has a spring -controlled latch member in the lock hous- 30 corresponding aperture Z which also admits the ing adapted to interlock with said stud, andapress stud. The latch plate is able to rock in its own button projecting from one side of the lock housplane about a nose piece 1 which is hooked to the ing for operating the latch member. edge of a flange r on the plate 1" and it is controlled 2. A lock structure as claimed in claim 1 whereby a spring g under the influence of which it enin the latch member consists of a plate having an 35 gages in a notch in the stud It so as to secure the aperture adapted to receive the stud and to allow flap in closing position. Ihe spring 9' is arthe plate to move into and out of engagement with ranged between the flange r and a lug e on the the latter, a resilient locking member slidably latch plate. A press button d, which projects guided in said aperture and adapted in one posithrough one side wall of the casing 11, can be tion to bear against the stud and prevent the 40 used for rocking the plate 6 so as to release it plate from moving, and means for supporting a from the stud. For this purpose the casing can key in position to operate said locking member. be gripped between the thumb and a finger, the 1 thumb being placed on the press button, and the KARL AUGUST FRANZEN. 

